4539971 has 4 divisors (see below), whose sum is σ = 4650744. Its totient is φ = 4429200.

The previous prime is 4539949. The next prime is 4539973. The reversal of 4539971 is 1799354.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4539971 - 2⁶ = 4539907 is a prime.

It is a super-2 number, since 2×4539971² = 41222673361682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4539973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55325 + ... + 55406.

It is an arithmetic number, because the mean of its divisors is an integer number (1162686).

Almost surely, 2^4539971 is an apocalyptic number.

4539971 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

4539971 is a deficient number, since it is larger than the sum of its proper divisors (110773).

4539971 is a wasteful number, since it uses less digits than its factorization.

4539971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110772.

The product of its digits is 34020, while the sum is 38.

The square root of 4539971 is about 2130.7207700682. The cubic root of 4539971 is about 165.5837419957.

The spelling of 4539971 in words is "four million, five hundred thirty-nine thousand, nine hundred seventy-one".